CDL DOUBLES PRACTICE TEST MISSOURI
11.
Under a pressurized system, the radiator cap:
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should never be removed until the system has cooled.
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should never be hot.
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should be removed when the coolant is hot.
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12.
If you cannot make a right turn without entering another traffic lane, you should:
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turn wide as you complete the turn.
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turn wide before you start the turn.
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swing wide to the left before starting the turn.
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13.
At dawn, dusk, in rain or snow, to make yourself easier to see you should:
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use the high beams.
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use the low beams.
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use the emergency flashers.
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14.
When preparing to make a right turn, you should NOT turn wide to the left as you start the turn. Why?
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It makes the turn harder.
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A following driver may try to pass you on the right.
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Turning wide to the left can cause your vehicle to tilt.
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15.
With low beams, drivers can see ahead about:
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15 feet
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100 feet
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250 feet
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16.
When going down grades, you should:
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put the transmission in Neutral.
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shift up.
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downshift to a lower gear.
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17.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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you need to shift up.
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one of the tires has gone flat.
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the brakes have failed.
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18.
When the wheels of a trailer lock up, which of the following is most likely to occur?
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The trailer will tend to push the towing vehicle sideways (tractor jackknife).
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The trailer will tend to swing around (trailer jackknife).
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The trailer will the trailer
has overturn.
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19.
If you unlock the pintle hook with the dolly still under the rear trailer:
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your vehicle might roll away.
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the brakes could be damaged by the combined forces of the springs and the air pressure.
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the dolly tow bar may fly up.
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20.
Large vehicles take longer to stop when they are:
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heavily loaded but not fully loaded.
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empty.
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fully loaded.
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